They do if you use a wide grip. Narrow grip or close grip is for the traps. Also you need to find out what works for you. If you feel them in your shoulders then use them for shoulders. (:
It's wrong to say an exercise targets a specific muscle group and no one else. What if you feel upright rows in the traps? Which I do. As being said so many times, you need to find out what works for...
The dumbbell chest press is actually better than the barbell because it allows you to go slightly in at the top of the movement. They say this is many videos aswell. So you get the full benefit of...